In the course of writing my report I discovered that I had not thoroughly tested all of the options for PHP. At the time what I had tested was considered sufficient. With the benefit of hindsight I now consider that view incorrect. That point aside there appears to be a lot of contention as to whether ISAPI or FastCGI is in fact the better way to run PHP. There was even suggestion that it may vary depending on what a script is doing.
Another thing I never tested was how JSP runs under other competing products. This is not so much of a problem since Tomcat is the primary environment under which it is run.
Despite being too late to gather significant data under any other environment it would be good to finish the project work by testing how PHP and JSP perform under each installation type. The reason for doing this last is that it requires an alteration to the server state which could in turn affect the results.
